| Niedersonthofener See | |
| Location: | Oberallgäu, Bavaria |
| Coords: | 47.635°N 10.2648°W |
| Inflow: | Dorfbach, Schrattenbach, Hasenhohbach, Seebach |
| Pushpin Map: | Bavaria |
| Basin Countries: | Germany |
| Length: | 2.8km (01.7miles) |
| Width: | 550m (1,800feet) |
| Area: | 135.3ha |
| Depth: | 10m (30feet) |
| Max-Depth: | 21.3m (69.9feet) |
| Volume: | 13500000m2 |
| Elevation: | 703.3m (2,307.4feet) |
Niedersonthofener See is a lake in Oberallgäu, Bavaria, Germany. At an elevation of 703,30 m, its surface area is 135.30 ha. The lake is known for having a shape that is strikingly similar to that of a whale.